Revolving telegraph-table



(No Model.) 7 2 Sheets-Sheet I.

J. L. GARBER. REVOLVING TELEGRAPH TABLE. v

j Patented Feb. 7,1882.

III

- WITNESSES:

ATTORNEYS.

7 UNITED STATES PATENT O FIC JOHN L. GARBER, on GnEENvILLE, 01110.

REVO'LVI NG TELEG RAPH-TABLE'.

SPECIFICATION formingpart of Letters Patent No. 253,366, dated February '7, 1882.

Application filed June 11, 1881. (No model.)

To all whom it may concern:

Be it.kn0wn that I, JOHN L. GARBER, of Greenville, in the county of Burke and State of Ohio, have invented an Improved Revolving Telegraph-Table, of which thefollowing specification is a full, clear, and exact description.

Theobjectof myinventio'n is to facilitate operating on any one set of instruments ofa telegraph-table containing several sets of instruments. l

The invention consists in a table divided by glass partitions into a series of subdivisions for the several sets of instruments, Each compartment-of the table requires four strips or rings of metal around the central post, a separate insulated wire leading from each ring to their respective instruments on the table, said wires placed in a shallow groove directly back of said rings and metal collar. The central post revolves in the central hollow leg of the table, said hollow leg being provided with a series of contact tongues consisting of a segmental plate attached to a countersunk stem-fitting into a socket and pressed against the plates or rings of the central post by a spiral spring, these contact-tongues or their sockets being connected with the local battery or main line. A perforated ringis fastened to the under side of the table, and into the aperture of this ring a vertical locking-bar fits, which is pressed upward by a suitable spring, and can be withdrawn by depressing afoot-lever on the under side of the base-frame of the table.

In the accompanying drawings, Figure is a front elevation of myimproved revolving telegraph-table, showingthe door of the central leg opened. Fig. 2 is a vertical sectional elevation of the central leg. Fig. 3 is a plan view of the under side of the center of the table. Fig. 4. is a horizontal sectional view of the central log of the table and the central post revolving thereon. Fig. 5 is a perspective view of one of the contact-tongues. Fig. 6 is a front elevation, partly in section, showing the connection of the Wires with the rings and the contact-tongues with the main line. Fig. 7 is a plan view of one division of the table, showing it provided with a set of telegraphic instruments.

Similar letters of reference indicate corresponding parts.

In thedrawings, A represents the table,which is divided into several compartments by the glass partitions B.

O are the wires, which will be hereinafter described.

D is the central hollow post of the table,

through which the gas-pipe G, provided with the burner G, passes. The lower end of this post D is reduced to form a bearing, D,which fits in a socket, D resting upon the upper surface of the base E of the table, and provided with the collar E at its upper end, which is surrounded by the ring E on the upper surface of the hollow central leg, F, which-is supported upon the base E. This hollow post is provided with a series of metal rings, H, the number of which vary according to the number of instruments used. In the present instance sixteen are shown, four being required for each with their respective wires leading to the different instruments of the table, as will be next described. 7 V

The wires 0 of the several sets of instr.u- 'ments allbeing connected in the same manner, it will suffice to describe one set only.

The wires 0 0 pass along the under side of the table to the central post, D, thence down h respectively, onthe said post. 0 extends under the table from the relay to the key, the other leg of the key being connected with the ring 72/ by the wire 0 thus forming the mainline' circuit. 0 extends under the table from the relay to the sounders, the other post of which is connected with the ring k by the wire 0 thus forming the local circuit.

The hollow central leg, F, has sockets J, each provided with binding-screws K and K attached to its inner side, and each of these sockets contains a round countersunk stem or plunger, N, fitting therein, and provided at its outer end with a segmental plate, L, which is pressed against the corresponding ring, H, on the post D by a spiral spring, M, contained in the socket J and projecting up into the countersunk stem N. The slight projection or knob on the stem N slides in a groove in socket J, thus keeping stem N from turning.

By means of the set-screw K the stem N, when forced to bottom of socket J, may be locked in that position. The wires leading compartment of the table, and are connected grooves in the hollow post to the rings h and from the main line are connected to the sockets J by the binding-screw K.

A metal ring, P, with equidistant perforations P, is fastened to the under side of the table A. A vertically-guided rod, Q, the upper end of which fits into the apertures P, is pivoted at its lower end to a footlcver or treadle, 1t, pivoted to the under side of base E and pressed upward by a spring, S. The central leg, F, is provided with a door, T.

The operation is as follows: All the plates L are pressed against the ringsH by thesprings M and the lines or connections are completed. If the operator wishes to use any certain set of instruments, he depresses the foot-lever 1t, thereby withdrawing the rod Q, from the aperture of the ring P and permitting the table to be turned until the desired set of instruments are in front of the operator, who does not leave his seat. The foot-lever R is then released and is pressed upward by the spring S, and the bar Q, is forced into the aperture in the ringP,thus locking the table in position. This table has been described as being arranged for one set of instruments, but may be arranged for two, three, or more sets of instruments. The number of rings H and contact-tongues L vary accordingly.

Having thus described my invention, what I claim as new is- 1. In a revolving telegraph-table, the combination, with a series of rings on the revolving central post and connected with both the main and local circuit wires, of a series of contact-tongues connected with both main and local circuit wires and attached to the inner side of the hollow leg surrounding the central post, substantially as and for the purpose set forth.

2. In a revolving telegraph-table, the combination, with the wires 0 and C, of the rings H on the post D, and of the plates L, the stem N, and the sockets J, attached to the hollow leg F, substantially as herein shown and described, and for the purpose set forth.

3. In a revolving telegraph-table, the contact-tongue,madesnbstantiallyashereinshown and described,and consistingof the segmental plate L, attached to a countersunk stein, N, in combination with a socket, J, and the spiral spring M, as set forth.

JOHN LEBBE US GAR BER.

Witnesses:

I. N. ULLERY, 11. O. GARBER. 

